Basis of Presentation - Components of Miscellaneous Other Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accounting Policies [Abstract]
Net periodic pension benefit	$ 91	$ 7	$ 267	$ 26
Total miscellaneous other income	$ 91	$ 7	$ 267	$ 26